Divorce case - property release or gift deed

I have three questions pertaining to releasing ex Wife's name from my property. I have got mutual consent divorce from my wife. Before divorce in good times, I had purchased an apartment with my income in Maharashtra with my ex wife as co owner. During our divorce settlement she agreed and mentioned in Divorce Petition she will release her right from apartment without any compensation. She is now settled in Gujarat not co-operating in executing Release Deed in person in Maharashtra. She is willing to release her name from apartment but doesn't want to visit Maharashtra to execute release deed due to ego issues. She has offered to execute Power of Attorney (in Gujarat) in favour of middleman we both trust and then the middleman will visit Maharashtra and execute release deed using that POA. 1. Want confirm with legal experts is the the correct, legal and valid procedure to release her name from the property? 2. Am I legally correct in sending her legal notice and insist to execute Release Deed in person, if above procecure is not valid one? 3. Is there any other simple legal procedure to release her name ?